Cross-Section Class

This is a class in the Object Oriented Programming (OOP) paradigm that defines cross-section objects in the LESM (Linear Elements Structure Model) program.

All cross-sections in LESM are considered to be of a generic type, which means that particular shapes are not specified, only their geometric properties are provided, such as area, moment of inertia and height.

Contents

Class definition

Definition of super-class Section as a handle class.

classdef Section < handle

Public attributes

    properties (SetAccess = public, GetAccess = public)
        id = 0;          % identification number
        area_x = 0;      % area relative to local x-axis (full area)
        area_y = 0;      % area relative to local y-axis (effective shear area)
        area_z = 0;      % area relative to local z-axis (effective shear area)
        inertia_x = 0;   % moment of inertia relative to local x-axis (torsion inertia)
        inertia_y = 0;   % moment of inertia relative to local y-axis (bending inertia)
        inertia_z = 0;   % moment of inertia relative to local z-axis (bending inertia)
        height_y = 0;    % height relative to local y-axis
        height_z = 0;    % height relative to local z-axis
    end

Constructor method

    methods
 
        %------------------------------------------------------------------
        function section = Section(id,Ax,Ay,Az,Ix,Iy,Iz,Hy,Hz)
            if (nargin > 0)
                section.id = id;
                section.area_x = Ax;
                section.area_y = Ay;
                section.area_z = Az;
                section.inertia_x = Ix;
                section.inertia_y = Iy;
                section.inertia_z = Iz;
                section.height_y = Hy;
                section.height_z = Hz;
            end
        end
    end

Public methods

    methods
 
        %------------------------------------------------------------------
        % Cleans data structure of a Section object.
        function clean(section)
            section.id = 0;
            section.area_x = 0;
            section.area_y = 0;
            section.area_z = 0;
            section.inertia_x = 0;
            section.inertia_y = 0;
            section.inertia_z = 0;
            section.height_y = 0;
            section.height_z = 0;
        end
    end

end

Published with MATLAB® R2017a